/* * Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.table; import java.awt.Component;import javax.swing.*; /** * This interface defines the method required by any object that * would like to be a renderer for cells in a <code>JTable</code>. * * @author Alan Chung */ public interface TableCellRenderer {     /**     * Returns the component used for drawing the cell.  This method is     * used to configure the renderer appropriately before drawing.     * <p>     * The <code>TableCellRenderer</code> is also responsible for rendering the     * the cell representing the table's current DnD drop location if     * it has one. If this renderer cares about rendering     * the DnD drop location, it should query the table directly to     * see if the given row and column represent the drop location:     * <pre>     *     JTable.DropLocation dropLocation = table.getDropLocation();     *     if (dropLocation != null     *             && !dropLocation.isInsertRow()     *             && !dropLocation.isInsertColumn()     *             && dropLocation.getRow() == row     *             && dropLocation.getColumn() == column) {     *     *         // this cell represents the current drop location     *         // so render it specially, perhaps with a different color     *     }     * </pre>     * <p>     * During a printing operation, this method will be called with     * <code>isSelected</code> and <code>hasFocus</code> values of     * <code>false</code> to prevent selection and focus from appearing     * in the printed output. To do other customization based on whether     * or not the table is being printed, check the return value from     * {@link javax.swing.JComponent#isPaintingForPrint()}.     *     * @param   table           the <code>JTable</code> that is asking the     *                          renderer to draw; can be <code>null</code>     * @param   value           the value of the cell to be rendered.  It is     *                          up to the specific renderer to interpret     *                          and draw the value.  For example, if     *                          <code>value</code>     *                          is the string "true", it could be rendered as a     *                          string or it could be rendered as a check     *                          box that is checked.  <code>null</code> is a     *                          valid value     * @param   isSelected      true if the cell is to be rendered with the     *                          selection highlighted; otherwise false     * @param   hasFocus        if true, render cell appropriately.  For     *                          example, put a special border on the cell, if     *                          the cell can be edited, render in the color used     *                          to indicate editing     * @param   row             the row index of the cell being drawn.  When     *                          drawing the header, the value of     *                          <code>row</code> is -1     * @param   column          the column index of the cell being drawn     * @see javax.swing.JComponent#isPaintingForPrint()     */    Component getTableCellRendererComponent(JTable table, Object value,                                            boolean isSelected, boolean hasFocus,                                            int row, int column);}